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Old 08-22-2012, 08:01 PM #49
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Default Re: New boost driver with IMS PCB

Luke, im interested in building a "pointer" with your driver, using 9mm 445 diode. How much would you sell one driver for?


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Old 08-22-2012, 08:26 PM #50
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Default Re: New boost driver with IMS PCB

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Originally Posted by gillza View Post
Luke, im interested in building a "pointer" with your driver, using 9mm 445 diode. How much would you sell one driver for?
send me a pm
-Luke
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Old 08-23-2012, 12:57 AM #51
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Default Re: New boost driver with IMS PCB

that i did
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650nm : LPC-815 @ 0.45A in Ehgemus Host Easy Build: 293mW

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Old 08-28-2012, 06:21 PM #52
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Default Re: New boost driver with IMS PCB

Looks cool Luke!
I was also thinking about using this to drive a 9mm 445 diode at 2.20A. About how efficient would this be using a 32650 3.7V battery with a diode pull of 2.20A. What kind of ripple could I expect at 2.2A. With diodes pulling over 2A now a boost like this is really needed. Anyway I am really interested! Could you send me a pm with a price =)
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Last edited by Onryo; 08-28-2012 at 06:24 PM.
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Old 08-28-2012, 07:01 PM #53
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Default Re: New boost driver with IMS PCB

I would guest 4-4.5A current from a single cell configuration. You will need to heatsink the battery too.
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Old 08-28-2012, 07:03 PM #54
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Default Re: New boost driver with IMS PCB

Luke you never replied to my PM btw
Just sayin' hehe
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405nm : PHR-803t in Dorcy Jr. Old Style with Ehgemus heatsink: 102mW
405nm : Bluray in SAIK SA-305 at 745ma: 980mW
445nm : Guidesman Dual E-Drive: 1.6W
650nm : LPC-815 @ 0.45A in Ehgemus Host Easy Build: 293mW

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Old 08-28-2012, 09:52 PM #55
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Default Re: New boost driver with IMS PCB

Working backward if the 9mm diode is pulling 2.2A @ 4.8V and Lukes driver is 85% efficient that poor 3.7V battery will have to pump out 12.4W. Thats like 3.36A! A FeiLong 32650 is physically massive though! About as thick as a D battery so I guess it will do a bit better with heat. Was hopping to get Ehgemus to make me a host like DTR has. That thing should deal with the heat well. Please correct me if I am wrong.

32650 Ehgemus RPL Host

That thing is just wicket!

All the best
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Old 08-28-2012, 09:57 PM #56
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Default Re: New boost driver with IMS PCB

Quote:
Originally Posted by Onryo View Post
Working backward if the 9mm diode is pulling 2.2A @ 4.8V and Lukes driver is 85% efficient that poor 3.7V battery will have to pump out 12.4W. Thats like 3.36A! A FeiLong 32650 is physically massive though! About as thick as a D battery so I guess it will do a bit better with heat. Was hopping to get Ehgemus to make me a host like DTR has. That thing should deal with the heat well. Please correct me if I am wrong.

32650 Ehgemus RPL Host

That thing is just wicket!

All the best
Onryo

Samsung and Panasonic 3000mAh+ batteries can handle much more current and not heat up I use Samsung 3000mAh for my 445nm with my buck/boost that is drawing around 3A+ from the battery and it doesn't heat up. These batteries have some sort of great internal structure

Last edited by foulmist; 08-28-2012 at 09:57 PM.
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Old 09-01-2012, 12:13 AM #57
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Default Re: New boost driver with IMS PCB

Sorry for my absence during these days... i was on travel.
Now i'm giving all the answers to your PMs
I have tested my driver with diodes loads and output currents of about 3A.
Now i'm using it for my handheld with two laser diodes connected in series.
To reduce the output ripple i'm using an 8.2uH small inductor is series with the diodes. The ripple is reduced of about a factor of 5 and it's in the order of 20mA with an 1.8A output.
-Luke
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Old 09-01-2012, 04:03 AM #58
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Default Re: New boost driver with IMS PCB

Nice. 20mA of ripple @ 1.8A with a buck/boost. Well if these go to sale shoot me a pm.
Onryo
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Old 09-01-2012, 07:41 AM #59
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Default Re: New boost driver with IMS PCB

Quote:
Originally Posted by Onryo View Post
Nice. 20mA of ripple @ 1.8A with a buck/boost. Well if these go to sale shoot me a pm.
Onryo
it's not a buck/boost it's only boost
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